We Are Ophthalmology LTD We Care About Your Health

Over the years, Ophthalmology LTD's name has become associated with the highest quality of comprehensive medical and surgical eye care. Highly trained ophthalmologists David West, Bryan Hammer, Eric Thomas, Dustin Dierks, Ryan Geraets, Michael Eide, Elizabeth Atchison, Elise In’t Veld, and Karen Dickes, as well as experienced optometrists Andrea McCann, Emily Walters, and Tyler Vermeer combine their considerable expertise to give each and every patient the best possible care. Ophthalmology LTD delivers treatment for cataracts, glaucoma, diabetic eye disease, as well as cornea transplants, oculoplastic surgery, retina surgery, vitreoretinal surgery, and pediatric eye care in Sioux Falls.

The Region’s Most Trusted, Experienced Eye Surgeons

Ophthalmology LTD brings the finest eye specialists in South Dakota to satellite offices in the tri-state area: Luverne, Pipestone, Worthington and Windom in Minnesota, Rock Valley, Sibley, and Sioux Center in Iowa, as well as Dell Rapids, Madison, Mitchell, Watertown, and Yankton in South Dakota.


In 1968, Ophthalmology LTD revolutionized eye care by taking a comprehensive approach, bringing patients a full range of vision specialties under one roof. Today, eye care teams across the nation are now mimicking the strategy we have spent more than 50 years perfecting. It is because of this experience and our genuine dedication to our patients that our team is widely considered the finest, most comprehensive group of sub-specialty eye surgeons in the tri-state Siouxland area.

Our Services

Our ophthalmologists have expertise in a wide range of specialties and work as a team to meet your eye care needs.


Not only is cataract treatment the most frequently performed surgery in the United States, it is also one of the most successful. More than 99% of patients who undergo cataract removal rank their vision as significantly improved. Drs. Hammer, Dierks, Eide, In't Veld, West, and Dickes perform this highly effective procedure.

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Early detection and treatment is the key to preventing vision loss with Glaucoma. More than three million Americans have glaucoma, but only half are actually aware that this "silent thief" is slowly and without warning stealing away their vision, sometimes without any noticeable symptoms. Drs. In't Veld and Dickes at Ophthalmology LTD specializes in the diagnosis and treatment of glaucoma.

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Children should have a yearly comprehensive eye exam along with their parents. Many vision problems can be detected early and treated before they become detrimental to a child's development, learning abilities, and every day function. Dr. West of Ophthalmology LTD has 22 years of experience in the evaluation and treatment of children's vision.

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The retina functions much like the film in a camera, and when film is damaged, so is the picture. Our retinal specialists Drs. Geraets, Thomas, and Atchison  offer comprehensive retinal exams and treatment to protect against diseases such as diabetic retinopathy that can damage your retina and vision.

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If a window pane is distorted or marred by imperfections, it is difficult to see out through it clearly. Your cornea is your eye’s window. To keep it clear or to restore it to its proper state, Dr. Eide of Ophthalmology LTD uses his specialty training in corneal diseases to treat dry eye, keratoconus, and other conditions that can cause corneal imperfections.

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When your eyelids, eye sockets, or tear ducts malfunction, or a tumor threatens your vision, Ophthalmology LTD oculoplastic surgeon Dr. Hammer can help. Specializing in procedures that restore clear vision as well as a more youthful appearance, Dr. Hammer treats and manages a wide variety of ocular conditions.

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We are a team of passionate professionals with
caring for patients in South Dakota, Minnesota, & Iowa.

Have a look around, then call, request an appointment online, or come by to learn more about how our team of eye experts can help you and your family.

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    very friendly and helpful. nice waiting area too. this is Samantha.. I use a different name on FB.
  • Kenton K.
    The staff is knowledgeable and courteous. Dr. Intveld was very professional as well as compassionate. As a veteran, I will attest I don't believe I could have made a better choice!
  • Dennis K.
    Everyone is always very courteous and timely have always have had very good experiences.
  • Les S.
    Was Great
  • Larry M.
    They had me come in on short notice. The staff were all very kind and compassionate. Doctor Dierks was the best.
  • Jeff H.
    My first visit went very smoothly with little wait times . All portions of the appointment were orderly and all three associates who did the work up went fast and friendly . My condition and plans to correct the problem... read more
  • Larry G.
    Great service all around. Would recommend their services to everyone.
  • Sherril H.
    Love this place! Dr. Atchison is caring and her staff excellent. The appts. are always on time and go quickly. Highly recommend.
  • Janet M.
    As always my experience was excellent from checking in with the receptionist to working with every member of the care team. Dr Geraets is kind & careful with his exams. I have had superior care at Ophthalmology LTD.
  • Shawna G.
    The nursing staff at Ophthalmology LTD are so kind. Check in is always a breeze. I see Dr. Hammer. He is very knowledgeable, which puts me at ease. I appreciate his compassion and how he explains everything. I... read more
  • Coni F.
    I recently had cataract surgery and it couldn’t have gone smoother. The doctors and staff at Ophthalmology Ltd. are ultimate professionals and very efficient in treating their patients and making them feel comfortable and cared for. I continue... read more
  • Lisa M.
    Dr. Atchison and her staff were very kind, caring and amazing. I highly recommend her! Thank you for the great care!
  • Leon K.
    Enjoyed the pleasant Appt. with Dr. Hammer. Everything is always down to earth and understandable, even for us older people.
  • Mary h.
    I had a wonderful experience
  • Dayle F.
    Dr Dierks at Ophthalmology LTD. Is the best. Took care of my Mom and also myself. You can't find a more caring and thorough eye Doctor.
  • Megan S.
    Dr. Geraets was great and very thorough!
  • Sara O.
    Very busy yet personable place. Currently recovering from successful cataract surgery. Dr Eide and staff were great!
  • David M.
    Always a great experience to go to Opthalmology LTD. Staff is very professional and helpful and the nurses and doctors give great care to their patients.
  • Keith G.
    I was treated with respect and compassion during my visit. Dr. Dickes and Nurse Becky answered all questions that I had.
  • Dave M.
    The Doctor s are very professional and knowledgeable, I’m so glad I made my appointment with them .
  • Linda K.
    I had a good experience at Ophthalmology LTD. They explained everything I needed to know and then told me if I had any more questions about the procedure just to call.
  • Amber T.
    They're a great place, friendly staff! Didn't make me feel embarrassed about my eye condition, Dr hammer treated me immediately and told me exactly what to expect and my eyes were better same day!
  • Kim
    Very professional and courteous staff and a thorough exam.
  • Amber T.
    I went in with a condition where my eyes wouldn't open and twitched when they did. Other Drs didn't take me seriously but he knew what it was and treated it immediately! It was better by the next day and... read more
  • Greg C.
    Great service and attention would definitely recommend.
  • Monica E.
    From the moment we stepped through Ophthalmology LTD’s front door, we received warm welcomes from all: receptionists, intake people, and staff. All were very kind, competent, and professional. We especially appreciated Dr Dierk’s conscientious and thorough exam. Our concerns were... read more
  • Cliff S.
    Great service
  • Kimberly V.
    Dr Mc Cann is so nice. Staff is great- Definitely recommend them for all your eye ophthalmology needs
  • Bob A.
    The caregivers at Ophthalamogy LTD were all kind and professional. I was pleased with the knowledge and expertise they showed. I watched "Online" last Thursday and was so impressed with answers given by one of their surgeons. She will... read more
  • Anna T.
    It’s an awesome experience and all staff are so welcoming and helpful. Dr. Andrea is very nice!
  • Becky L.
    Dr. West was very kind, considerate, and compassionate! He explained everything he was doing to me to ease my anxiety!
  • Kathleen D.
    My experiences at the clinic have always been positive. The staff are friendly & caring. Dr. Dierks is the reason I chose the clinic. I met him several years ago when I took my friend's elderly mother for an appointment... read more
  • L M.
    Very thorough. I felt all my needs and concerns were answered and taken care of.
  • Ashley C.
    I always enjoy coming in and seeing Dr. Walters! She takes her time and hears what the patient has to say and gives the best advice for helping her patients.
  • David O.
    I’ve been seeing Dr. Thomas now for a year in reference to my eyes and his professionalism and skills are second to none his staff again second to none I recommend Dr. Thomas staff and the entire Ophthalmology, LTE for... read more
  • Steven B.
    The eye exam was very efficient and thorough. The doctor and staff did an amazing job 👍
  • Doug D.
    Always a pleasure to be with and around caring professionals
  • Andrew M.
    Had some vision issues which needed to be addressed in a relatively manner. Dr. Emily Walters did a great job working with me and explaining what was happening to my eyes. In addition, she was clear as to... read more
  • Peter B.
    I have been seeing Dr. Atchison for over 2 years. She has done surgery on my eye, and also set up an appointment with a Dr at the Mayo Clinic, and because she knows my Dr. In Rochester it has... read more
  • Garin S.
    Friendly staff and environment.
  • JT C.
    Lazer of left eye in hopes of ending glaucoma. Dr Dickes was professional, informative and kind. I felt they were interested in making my eyes as healthy as possible. Making for a good experience.
  • Jan G.
    Dr. Elise- The Best in Midwest! Should be motto for her. Really helped figure out some issues with my vision and very detailed, skilled and went above and beyond to help. She “sees it all”.
  • Michael P.
    Extremely helpful and knowledgeable staff. I felt they went above and beyond what was expected to make a correct diagnosis for me. I'm very grateful for their work and dedication
  • Tom B.
    Ophthalmology LTD service is outstanding. Having a Doctor see me after hours on a Friday was great. Thier service for scheduled appointments was on point. Highly recommended these group of professionals
  • Brooke M.
    Everyone who works there is professional and friendly! They take care of you!!
  • Chad R.
    Very friendly, helpful, and knowledgeable staff. Great facility with outstanding service.
  • Debra A.
    Omg!! I have to tell you that I believe Dr Ryan Geraets and his team saved my sight yesterday…. I thank GOD for you all for getting me and getting my situation under control in a prompt manner.. 5 ⭐️... read more
  • J M.
    Everyone was helpful, professional and provided detailed explanations for my tests and procedures